/* ============ 球帝带安装平台 · 共享样式 /assets/site.css ============ */

:root{
  --navy:#0B1F3A;
  --blue:#123B6D;
  --orange:#FF6B1A;
  --ember:#E85400;
  --mist:#E8EEF5;
  --fog:#F7F9FC;
  --graphite:#1C2430;
  --steel:#5A6B7F;
  --signal:#1F9D6A;
  --warn:#F5B400;

  --frame-w:min(1240px, 100% - 2.5rem);
  --cut:20px;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Barlow Condensed","DIN Condensed","Roboto Condensed","Arial Narrow",ui-monospace,system-ui,sans-serif;
  --shadow-panel:0 20px 38px -32px rgba(11,31,58,.85);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--fog);
  color:var(--graphite);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:900;line-height:1.12;letter-spacing:-.01em;color:var(--navy);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
[hidden]{display:none !important;}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

:focus-visible{
  outline:3px solid var(--orange);
  outline-offset:2px;
}
.site-frame :focus-visible,
.site-foot :focus-visible{
  outline-color:var(--warn);
}

#main-content{scroll-margin-top:7rem;}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:absolute;
  top:-4.5rem;
  left:1rem;
  z-index:200;
  display:inline-block;
  padding:.6rem 1rem;
  background:var(--orange);
  color:var(--navy);
  font-weight:800;
  font-size:.88rem;
  letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:top .2s ease;
}
.skip-link:focus{top:.5rem;}

/* ---------- 头部外框 ---------- */
.site-frame{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--navy);
  color:var(--fog);
  border-bottom:3px solid var(--orange);
  box-shadow:0 18px 32px -26px rgba(11,31,58,.95);
}

.frame-progress{
  display:block;
  height:3px;
  background:rgba(232,238,245,.14);
  overflow:hidden;
}
.frame-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--orange),var(--warn));
  transition:transform .18s linear;
}

.frame-ruler{
  height:9px;
  background-color:rgba(232,238,245,.05);
  background-image:repeating-linear-gradient(90deg, rgba(255,107,26,.85) 0 1px, transparent 1px 14px);
  background-repeat:repeat-x;
  border-bottom:1px solid rgba(232,238,245,.12);
}

.frame-bar{
  width:var(--frame-w);
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.7rem 0;
}

/* ---------- 品牌 ---------- */
.brand{
  display:flex;
  align-items:center;
  gap:.7rem;
  min-width:0;
  color:var(--fog);
}
.brand__mark{
  flex:0 0 auto;
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  background:var(--orange);
  color:var(--navy);
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.15rem;
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.brand__text{display:block;min-width:0;}
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1rem,2.4vw,1.14rem);
  line-height:1.15;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand__tag{
  display:block;
  font-size:.72rem;
  line-height:1.35;
  letter-spacing:.09em;
  color:rgba(232,238,245,.62);
  white-space:nowrap;
}

/* ---------- 头部动作区 ---------- */
.frame-actions{
  display:flex;
  align-items:center;
  gap:.5rem;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.4rem;
  padding:.62rem 1rem;
  font-family:var(--font-body);
  font-size:.9rem;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.02em;
  border-radius:0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn--primary{
  background:var(--orange);
  border:2px solid var(--orange);
  color:var(--navy);
}
.btn--primary:hover{background:var(--ember);border-color:var(--ember);color:var(--fog);}
.btn--ghost{
  background:transparent;
  border:2px solid rgba(232,238,245,.4);
  color:var(--fog);
}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange);}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.45rem;
  padding:.55rem .7rem;
  border:2px solid rgba(232,238,245,.35);
  color:var(--fog);
  font-size:.8rem;
  font-weight:800;
  letter-spacing:.08em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}
.site-frame[data-open="true"] .nav-toggle{
  border-color:var(--orange);
  color:var(--navy);
  background:var(--orange);
}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:18px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform .22s ease,opacity .22s ease;
}
.site-frame[data-open="true"] .nav-toggle__bars span:first-child{transform:translateY(6px) rotate(45deg);}
.site-frame[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.site-frame[data-open="true"] .nav-toggle__bars span:last-child{transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__label{line-height:1;}

/* ---------- 导航 ---------- */
.nav-tray{
  background:var(--blue);
  border-top:1px solid rgba(232,238,245,.16);
}
.site-nav{
  width:var(--frame-w);
  margin-inline:auto;
}
.site-nav__list{
  display:flex;
  align-items:stretch;
  gap:.15rem;
  overflow-x:auto;
  scrollbar-width:none;
}
.site-nav__list::-webkit-scrollbar{height:0;}
.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:.5rem;
  padding:.85rem 1rem;
  white-space:nowrap;
  font-weight:800;
  font-size:.92rem;
  color:rgba(247,249,252,.78);
  border-bottom:3px solid transparent;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.site-nav__link:hover,
.site-nav__link:focus-visible{
  color:var(--fog);
  background:rgba(255,107,26,.16);
  border-bottom-color:var(--orange);
}
.site-nav__link[aria-current="page"]{
  color:var(--navy);
  background:var(--fog);
  border-bottom-color:var(--orange);
}
.site-nav__num{
  font-family:var(--font-num);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--orange);
}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--ember);}
.site-nav__label{line-height:1.3;}

/* ---------- 通用容器与组件 ---------- */
.wrap{
  width:var(--frame-w);
  margin-inline:auto;
}

.panel{
  background:var(--fog);
  border:2px solid rgba(18,59,109,.16);
  padding:clamp(1.1rem,3vw,2rem);
  box-shadow:var(--shadow-panel);
}
.panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  border-left:5px solid var(--orange);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-size:.72rem;
  font-weight:900;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ember);
}
.eyebrow::before{
  content:"";
  display:inline-block;
  width:22px;
  height:3px;
  background:var(--ember);
}

.tag{
  display:inline-block;
  padding:.18rem .55rem;
  font-size:.72rem;
  font-weight:800;
  letter-spacing:.06em;
  line-height:1.5;
  background:var(--mist);
  color:var(--blue);
  border:1px solid rgba(18,59,109,.22);
}
.tag--ok{
  background:var(--signal);
  color:var(--navy);
  border-color:var(--signal);
}
.tag--warn{
  background:var(--warn);
  color:var(--navy);
  border-color:var(--warn);
}

/* ---------- 现场图容器（页面阶段放 img） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background-color:var(--blue);
  background-image:repeating-linear-gradient(135deg, rgba(247,249,252,.07) 0 10px, transparent 10px 20px);
  border:2px solid var(--navy);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}
.media-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.95) contrast(1.03);
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:4 / 5;}
.media-frame__caption{
  position:absolute;
  inset:auto 0 0 0;
  padding:1.6rem .85rem .7rem;
  background:linear-gradient(0deg, rgba(11,31,58,.94), rgba(11,31,58,0));
  color:var(--fog);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.03em;
  line-height:1.5;
}

/* ---------- 页脚 ---------- */
.site-foot{
  margin-top:clamp(3rem,8vw,6rem);
  background:var(--navy);
  color:rgba(247,249,252,.82);
  border-top:4px solid var(--orange);
}
.foot-panel{
  width:var(--frame-w);
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.45fr);
  gap:2.5rem;
  padding:3rem 0 2.2rem;
}
.foot-brand{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:1rem;
}
.foot-brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.15rem,2.6vw,1.45rem);
  line-height:1.2;
  letter-spacing:.02em;
  color:var(--fog);
}
.foot-brand__summary{
  max-width:34ch;
  font-size:.92rem;
  line-height:1.8;
  color:rgba(232,238,245,.68);
}
.foot-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:1.6rem 1.2rem;
}
.foot-col__title{
  margin-bottom:.7rem;
  font-size:.74rem;
  font-weight:900;
  letter-spacing:.16em;
  color:var(--orange);
}
.foot-links li + li{margin-top:.15rem;}
.foot-links a{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.22rem 0;
  font-size:.92rem;
  color:rgba(247,249,252,.8);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.foot-links a::before{
  content:"";
  display:inline-block;
  width:10px;
  height:2px;
  background:var(--orange);
  opacity:.7;
}
.foot-links a:hover,
.foot-links a:focus-visible{
  color:var(--fog);
  border-bottom-color:var(--orange);
}
.foot-meta{
  width:var(--frame-w);
  margin-inline:auto;
  border-top:1px dashed rgba(232,238,245,.24);
  padding:1.4rem 0;
}
.foot-contact{
  display:flex;
  flex-wrap:wrap;
  gap:.9rem 2.4rem;
  font-size:.9rem;
  color:rgba(247,249,252,.85);
}
.foot-contact li{
  display:flex;
  flex-direction:column;
  gap:.1rem;
}
.foot-contact__label{
  font-size:.7rem;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--orange);
}
.foot-base{
  width:var(--frame-w);
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.75rem 1.5rem;
  padding:1rem 0 1.8rem;
  border-top:1px solid rgba(232,238,245,.16);
  font-size:.8rem;
  color:rgba(232,238,245,.62);
}
.foot-base__copy{margin-right:auto;}
.foot-base__icp{letter-spacing:.04em;}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.45rem .85rem;
  border:2px solid rgba(232,238,245,.3);
  color:var(--fog);
  font-size:.78rem;
  font-weight:800;
  letter-spacing:.06em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease,transform .18s ease;
}
.to-top::before{content:"↑";font-size:.95rem;line-height:1;}
.to-top:hover{
  border-color:var(--orange);
  color:var(--orange);
  transform:translateY(-2px);
}

/* ---------- 平板 ---------- */
@media (max-width:960px){
  :root{--frame-w:min(1240px, 100% - 2rem);}

  .nav-toggle{display:inline-flex;}

  .nav-tray{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:90;
    max-height:82vh;
    overflow-y:auto;
    padding:.9rem max(1rem, env(safe-area-inset-left)) calc(.9rem + env(safe-area-inset-bottom));
    background:var(--blue);
    border-top:3px solid var(--orange);
    border-bottom:0;
    transform:translateY(105%);
    transition:transform .3s cubic-bezier(.22,.7,.2,1);
    box-shadow:0 -28px 52px -26px rgba(11,31,58,.9);
  }
  .site-frame[data-open="true"] .nav-tray{transform:translateY(0);}
  .site-nav{width:100%;}
  .site-nav__list{
    flex-direction:column;
    gap:.2rem;
    overflow:visible;
  }
  .site-nav__link{
    padding:.85rem .9rem;
    font-size:1.05rem;
    border-bottom:0;
    border-left:3px solid transparent;
  }
  .site-nav__link:hover,
  .site-nav__link:focus-visible{
    border-left-color:var(--orange);
    border-bottom-color:transparent;
  }
  .site-nav__link[aria-current="page"]{
    border-left-color:var(--orange);
    border-bottom-color:transparent;
    background:var(--fog);
    color:var(--navy);
  }

  .foot-panel{
    grid-template-columns:minmax(0,1fr);
    gap:2rem;
    padding:2.4rem 0 1.8rem;
  }
}

/* ---------- 手机 ---------- */
@media (max-width:640px){
  :root{--frame-w:calc(100% - 1.6rem);}

  .frame-bar{padding:.6rem 0;gap:.6rem;}
  .brand__mark{width:38px;height:38px;font-size:1.05rem;}
  .brand__tag{display:none;}
  .frame-actions .btn--ghost{display:none;}
  .frame-actions .btn--primary{padding:.5rem .75rem;font-size:.82rem;}
  .nav-toggle{padding:.5rem .6rem;font-size:.76rem;}

  .foot-contact{flex-direction:column;gap:.7rem;}
  .foot-base{gap:.6rem 1rem;font-size:.76rem;}
  .foot-base__copy{flex:1 1 100%;}
  .to-top{padding:.4rem .7rem;}
}